Pencil-sharpener.



No. 873,079 PATENTED DEC. 10, .1907.

A. T. PETERSON.

PENCIL SHARPENER. APPLIGATION FILED FEB.14, 1907.

ARNE' PETERSON, oriiAonvEf, Wisconsin. v f

' PENCIL-Susanna Specification of Letters fatent. I

grasses-ante, .10, 1907..

Application filed reb 'r n, 1907. fierial No. 357.251 I p To all whom itmay concern: Y I

Be it known that 1, Anna T. P TERsou, residing in Racine, in the countyof Racine and State of Wisconsin, have invented new and usefulImprovements Pencil-Sharpeners, of which the followingis a description,reference bein had to the accompanying drawings whic h are a part ofthis specification. r This invention has for its object to provide apdncil sharpener of a sim le construction which will be of a size andsiiape convenient for carrying in the pocket and which will be efficientand durable in use.

Another object or" this invention is to provide a pencil sharpener inwhich the cutting operation will be made in strokes in the dircction ofthe point of the pencil instead of around the point of the pencil,whereby a more perfect-operation is performed without liability ofbreaking the point of the pencil. Anot-her object of this invention isto provide such a pencil sharpener with means for reinforcing the pencilpoint during the sharpening operation to prevent its being broken.Another object of this invention is to provide such a pencil sharpenerwith a suitable receptacle for receiving the shavings. vAnother objectof this invention is to provide a pencil sharpener with a cuttertraveling in an arc sha ed path, whereby a sharp point will be pro needon thepencil without cutting the wood ofthe pencil at as great adistance from the point as with a cutter traveling in a straight line.

With the above and other objects in view the invention consists in thepencil sharpener herein claimed, its arts and combinations 0% parts andall equivalents.

Referringto. the accompanying drawings in which like characters ofreference indicate the same parts in the several views; Figure 1 "is alongitudipal sectiolralview of a pencil sharpener constructedjinaccordance with this invention; Fig. 2 is a lan view thereof;

Fig. 3 is a rear end view t ereof;'Fig. 4 is sectional view on the planeof line 1-4 of Fig. 1; and, Fig. 5 is a fragmental view of the upperportion of the pencil sharpener, showing a modified formfof thumb gripon the knife slide. e

in these drawings '10 represents a,casing which is of a tapering orwedge shape as shownwith a low front wall 11 and a high rear wall 12forming a box like frame, the side wails having ears 13 at their upperends are-bent around the front wall 1 1 and i 1 the rear wall 12 :tohold themin places The,

ears 1.3 may be dispensed with and theend 'wall's' held .in plaoe'in;any" other desirable manner, but this has been found a desirable.-eonstruction in practice. At the bottom of" the rear wall 12 is acircular opening 1 1 of a suitable size to receive the endof-a pencil,which is shown in dotted lines in'Fig. l. 1

A pencil support 15 is contained within the casing and preferablycomprises a block of soft metal, as lead, which maybe molded as shown toform a socket the shape of a.

pencil point, being held in place by means of pins 16 passingtherethrough and through the casing and adapted to receive the end ofthe pencil when entered through opening 14. The pencil support 15 isspaced from the front end 11 of the casing to provide a pocket orreceptacle 1 7 for receiving the shavings, 4

and the rear end of the pencil support is cut away to reduce the weig t,leaving an 6XteT'1-- sion 18 for closing the rear space.

The upper edges of the side. walls of the casing are bent inwardly toform guide flanges 19 which are slightly curved on an are about a centerwhich is preferably about eighteen inches distant, though an arc of anyother radius will do. A slide is mounted on the guide formed by flanges19 and comprises a lower member-20 an intermediate member 21 and anupper member 22 the lower member bearing beneath. the guide. flangesv19, the intermediate member being in the same plane with said guideflangesand just fitting therebetween, and the upper member bearing ontop of the guide flanges,

the three members being securedtogether by-means of rivets 23 or by anyother suitable means.

The lower member 20 of the slide is pro vided Witha projecting end whichis-beveled' and has a disk shaped knife member 24 mounted thereon,beingditted on a screw 25 threaded in the projectionand capable oilbeing turned. thereon to changeits' position so as to present a newcutting edge when suitable thumb grip to enable the operator The upperinember 22' has upturned w front and rear curved. flanges 26 to'torm ato move the slide back and forth in its guide while the device is heldin the hand.

Curvature of the guide and is rounded transversely to receive therounded lower cutting slide is movedback an forth in its guide b so Thepenci stroke of the cutterso that the operation edge of thejknife member241 during its movements, the saidsurfaces intercepting the socket inthe'pencil support 15, to form'an opening 27 through who the knifemember 5 passes during themovements of the slide.

hen a'pencilis within the pencil support the knife member will engage itthrough said opening-and cut a shaving'therefrom.

, The-socket in the pencil su port is madeis knurled at29 and'near thefront end thereof it is curved and knurled at 30 to provide 4 2ogripping surfaces for the fin ers and preventthe device slipping in theoperation.

In operation, apencil is inserted through the opening 14; until it bearsin the conical socket of the pencil sup ort 15, and then the and during.the

. means of the thumb engaging the thum I hold. With each stroke theknife member 24cuts" ashaving from theend of the pencil whereitprojectsithrou h the opening 27. may be slight y turned after eachwill be uniform on all sides of the encil and result in a true conicalpoint, t e conical socket of the pencil support preventingthe lead beingbroken by the pressure of the knife member thereon and the stop 28protecting the lead from breakage as the result' ofan pulling tendencyexerted by the knife mem er thereon. The shavings or chips are forcedinto the receptacle 17 so that there is no liability. of spreading themabout or of soiling 'the fingers with the graphite, and when theoperation'is completed they may be dumped therefrom. W enever thecutting ed e of the knifemember becomes dull it may e adjusted topresent a new portion to the work and a new knife member may be easilysubstituted therefor when the old one is entirely worn out.

venient for carrying in the pocket and is eflicient and durable withoutinvolving expensive construction.

The flanges 26' of the thumb grip are curved rea'rwardly to'conveniently receive the thumb on either side thereof, so that thepencil sharpener may be used in either hand.

As an alternative for this form of thumb to grip the thumb grip shown inFig. 5 may be use wherein the top member of the slide is arched to forma half round Iprojection 31 which may be engaged by t e thumb on eitherside.

It is obyion's that this invention may be above described.

The pencil cutter of this invention is con used for sharpenin the ointsof paper cov end of thepencil as usual and then insert the end of thepencil in the pencil sharpener and cut the graphite thereof to a sharppoint as The guide for 4 the slide may be made straight insteadofeurved, but it is preferred to arrange it on the curve as here shown,as by 'doingso the point of the pencil may be made sharper for a givenlengthof cut. What I claim as ,my invention is:

1. Apencil sharpener, comprising a sheet 8( metal casing having anopening in its end 1 to receive a pencil, a separate pencil support/mounted ,therein and provided'with a con- 108.1 socket tore'ceive andsupport the end which the pencil is exposed, a guide formed by bentedges of the casing, a slide movably mounted in the gulde, and a knifemember carried by the slide and adapted to engage of the pencil 'with,an opening through tained within the casing and provided with a conicalsocket to receive and support the end of a pencil with'an openingthrough which the pencilis exposed, a guide formed- 'by inturned edgesof the casing, a slide movably mounted in the guide, a knife membercarried by the slide and adapted toengage and cut the end of the pencilthrough the opening in the socket of the pencil support, and a thumbpiece on the slide by which the slide may be moved.

3. A. pencil sharpener, comprising'a sheet metal casing having anopening. through. which a pencil may be inserted, a separate pencil suport contained within the casing. and provi ed with a conical socket toreceive the end, of the pencil with an opening through which the pencilis exposed, a guide formed by interned edges of the casing, a slideInounli'd in the guide, a knife member carried by the slide for engagingand cutting the end of the pencil through the opening in the socket ofthe pencil support, and a pocket formed between the end of the easingand the pencil support to receive the shavings from the knife member.

4. A pencil sharpener, comprising a casing having an opening throughwhich a pencil may be inserted, a pencil support contained within thecasing and having a conical socket to receive the end of the pencil withan 0 enin thrbugh which the pencil is exposed a guide formed by internededgesof the casing, a slide comprising a top and bottom plate and anintermediate plate secured together and movably mounted to slide on theguide with the intur'ned edges of the, easily held between the top andbottom ides, and a rotary knife'member adjustably mounted on the lowerlate in the socket of the pencil support.-

5. A pencil sharpener, comprising a sheet metal casing having an openingto receive a pencil; a pencil support comprising a block of soft metalcontained within the I casing andprovided with'a conical socket toreceive the end of the pencil with an opening through which the pencilis exposed, a guide formed b inturn'ed edges of v the casing, a slidemova ly mounted on the guide,l a knife member carried by the slideand-adapted to engage and cut the end oi the pencil through the openingin the socket 4 of the pencil support, and a stop at the end oftheopening to-engage and support the end of the pencil.

6, A pencil sharpener, comprising a sheet metal casing to receive apencil, a pencil support contained within the casing and provided with aconical socket to receive the end of the pencil with an opening thrt'.,zr"which the pencil is exposed a guide formed by inturned edges ofthe casing, a slide movably mounted on the guide, a

knife member" carried by the slide and adapted to engage and cut the endof the pencil kl i l i of the slideand adapted to engage an out the endof the pencil through the opening Pthr'ough the opening in the socketofthe v y which the slide may be moved,- and I encil support, a thumb gripon the slidegrips. on the casing to prevent sharpener, comprisin' gatheet' I intu'rnededges of the side walls of the oasing ,-,a slidemov'ably mounted on the guide v a rotary knife member carried byntheslide and adapted to engage and out the end of the pencil through, the oening in the socket of the pencil support, a rig at the end of thesocket forming a stop for limitingthe position of the pencilpand apocket formed in the casing between the end of the pencil support andthe end of the casing.

In testimony whereof, I afiix my signature, in presence of twowitnesses.

Anus r. PETERSON.

Witnesses:

Fnnn BAnnnNRo'rn, Jr.,' C. M. LEONARD.

